The distance of the point (1,-5,9) from the plane

Question:

The distance of the point $(1,-5,9)$ from the plane $x-y+z=5$ measured along the line $\mathrm{x}=\mathrm{y}=\mathrm{z}$ is :

  1. $\frac{20}{3}$

  2. $3 \sqrt{10}$

  3. $10 \sqrt{3}$

  4. $\frac{10}{\sqrt{3}}$


Correct Option: , 3

Solution:

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